Things you need to know

The backup battery for the NBN Power Supply Unit is mandatory. Therefore it is imperative that you familiarise yourself with how it works and the maintenance of the battery. Refer to the fibre user guide to learn more about the Battery Backup Service.

During an power outage

In the event of a power outage, your landline phone and internet services over the NBN won’t work if the battery is faulty or missing.

How to replace your battery

Consult the NBN Fibre user Guide for information and videos on how to maintain and replace your battery.

Where to buy a new battery and recycle your old one.

Please proceed to the NBN battery backup service page for where to buy a new battery.

Print this Battery Specification and bring it with you when you go to purchase your new battery.